Sagay City comprises 25 barangays with an estimated population of 127,106. 15 of its barangays (60%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Andres Bonifacio | 1,622 | 0 | Dead zone: no towers from any source |
| Bato | 7,056 | 3 | Crowdsourced signal only (no registered tower) |
| Baviera | 3,131 | 0 | Dead zone: no towers from any source |
| Bulanon | 6,633 | 0 | Dead zone: no towers from any source |
| Campo Himoga-an | 3,026 | 1 | Crowdsourced signal only (no registered tower) |
| Campo Santiago | 1,417 | 0 | Dead zone: no towers from any source |
| Colonia Divina | 2,662 | 0 | Dead zone: no towers from any source |
| Fabrica | 5,224 | 0 | Dead zone: no towers from any source |
| General Luna | 4,252 | 0 | Dead zone: no towers from any source |
| Himoga-an Baybay | 3,534 | 1 | Crowdsourced signal only (no registered tower) |
| Lopez Jaena | 6,837 | 0 | Dead zone: no towers from any source |
| Makiling | 4,092 | 1 | Crowdsourced signal only (no registered tower) |
| Malubon | 7,150 | 0 | Dead zone: no towers from any source |
| Molocaboc | 2,128 | 0 | Dead zone: no towers from any source |
| Old Sagay | 8,981 | 0 | Dead zone: no towers from any source |
| Paraiso | 13,995 | 4 | Crowdsourced signal only (no registered tower) |
| Plaridel | 1,494 | 0 | Dead zone: no towers from any source |
| Poblacion I (Barangay 1) | 8,023 | 6 | Crowdsourced signal only (no registered tower) |
| Poblacion II (Barangay 2) | 11,113 | 18 | Crowdsourced signal only (no registered tower) |
| Puey | 2,038 | 0 | Dead zone: no towers from any source |
| Rafaela Barrera | 4,697 | 1 | Crowdsourced signal only (no registered tower) |
| Rizal | 7,637 | 1 | Crowdsourced signal only (no registered tower) |
| Taba-ao | 2,118 | 0 | Dead zone: no towers from any source |
| Tadlong | 4,340 | 2 | Crowdsourced signal only (no registered tower) |
| Vito | 3,906 | 0 | Dead zone: no towers from any source |